Tubular rivet



(No Model.)

M. BRAY.

TUBULAR RIVBT. No. 249,886. Patented Nov. 22,1881.

Witnesses: Inventor:

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UNITED STATES PATENT Orrin.

MELLEN BRAY, OF NEWTON, MASSACHUSETTS.-

TUBULAR RIVET.

SPECIFICATION forming part of Letters Patent No. 249,886, dated November 22, 1881.

Application filed August 17, 1881. (No model.)

To all whom it may concern:

Be it known that I, MELLEN BRAY, of Newton, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Tubular Rivets, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to the construction of rivets having tubular shanks, and has for its object the production of a rivet that when enameled and applied to use and subjected to wear will not quickly become bright over, the whole surface of its head, and that may also be successfully used for various purposes, in combination with a solid rivet, the shank of which passes through its tubular shank; and it consists, first, in forming the head of the rivet with a concave recess in its outer face.

It further consists in forming the head of the rivet concavo convex with theconcave side outward.

It further consists in forming the head of the rivet concavo'convex with the concave side outward, and the shank with an axial hole extending longitudinally through the same to the outer surface of the head, the same being made from a single piece ot'solid wire by swaging the head and drilling out the shank.

Figure 1 of the drawings is a side elevation of my improved rivet, natural size. Fig. 2 is a plan of same enlarged. Fig. 3 is a central longitudinal section of same, also enlarged. Fig. 4 is a central longitudinal section, illustrating one method of using it; and Fig. 5 is a similar section, illustrating a modification in which the hole is not drilled entirely through.

My improved rivet is made from a piece of solid metal or wire of the size that it is desired that the shank a of the rivet shall have, the head 0 being formed to the desired .coucavoconvex shape by upsetting the end of the wire in suitably-shaped dies, the concave recess a being of greater or less depth, according to use to which it is to be applied, and then the shank a is drilled out to form a tube, the hole being cording to the use to which it is to be applied.

One great advantage of this form of rivet is that when japanned or enameled and exposed to wear-as in shoes, rubbers, or other articlesonly a narrow rim of the head will become defaced by wearing away the coating of enamel or japan.

This rivet can also be used to great advantage as a shank or neck for buttons that are secured to the garment by riveting, in which case the solid rivet cl is used in combination with it, said rivet I being headed down upon the concave surface of the head I), so that the head formed by the clinching down ot'the rivet d liesall within the concave recess 0, as shown in Fig. 4.

I aux-aware that an eyelet struck up from sheet metal has been used in this way for the shanks of buttons; but they are verylikely to cripple in riveting the button upon the garment, and are therefore objectionable. This objection is entirely overcome by using my i1nproved rivet, as, being made from solid wire and thetube formed by drilling longitudinally through the shank, the walls of the tube can be made much thicker and stiffer than it is possible to make them by striking up from sheet metal, and the button may be firmly secured upon the garment without the least danger of crippling the shank.

What I claim as new, and desire to secure by Letters Patent ot' the United States, is-

1. A tubular rivet having a concave recess formed in the outer surface of its head.

2. A tubular rivet having a concavo-convex head with the concave side outward, substantially as described.

3. A IiVGt the head of which is made concavoconvex with the concave side outward, and the shank with an axial hole extending longitudinally through the same to the outer surface of the head, made from a solid piece of wire, substantially as described.

Executed at Boston, Massachusetts, this 15th day of August, 1881.

MELLEN BRAY. Witnesses:

E. A. HEMMENWAY, WALTER E. LOMBARD. 

